import { TRPCError } from "@trpc/server";
import { jsonArrayFrom } from "kysely/helpers/postgres";
import type {
	NewOrdini,
	OrdiniOrdineId,
	OrdiniUpdate,
} from "~/schemas/public/Ordini";
import PaymentStatusEnum from "~/schemas/public/PaymentStatusEnum";
import type { UsersId } from "~/schemas/public/Users";
import { db, type Querier } from "~/server/db";

export type OrdiniWPagamenti = Awaited<ReturnType<typeof getOrdini>>[number];
export const getOrdini = async (userId: UsersId | undefined) => {
	try {
		let qry = db
			.selectFrom("ordini")
			.selectAll("ordini")
			.innerJoin("users", "users.id", "ordini.userid")
			.select("users.username")
			.select((eb) => [
				jsonArrayFrom(
					eb
						.selectFrom("payments")
						.selectAll("payments")
						.whereRef("payments.ordine_id", "=", "ordini.ordine_id")
						.orderBy("payments.created_at", "desc"),
				).as("pagamenti"),
			]);

		if (userId) {
			qry = qry.where("ordini.userid", "=", userId);
		}
		return await qry.orderBy("created_at", "desc").execute();
	} catch (e) {
		throw new TRPCError({
			code: "INTERNAL_SERVER_ERROR",
			message: `Error fetching ordini by user ID: ${(e as Error).message}`,
		});
	}
};

export const getOrdineById = async (ordineId: OrdiniOrdineId) => {
	try {
		return await db
			.selectFrom("ordini")
			.selectAll("ordini")
			.innerJoin("users", "users.id", "ordini.userid")
			.select("users.username")
			.select((eb) => [
				jsonArrayFrom(
					eb
						.selectFrom("payments")
						.selectAll("payments")
						.whereRef("payments.ordine_id", "=", "ordini.ordine_id")
						.orderBy("payments.created_at", "desc"),
				).as("pagamenti"),
			])
			.where("ordini.ordine_id", "=", ordineId)
			.orderBy("created_at", "desc")
			.executeTakeFirstOrThrow();
	} catch (e) {
		throw new TRPCError({
			code: "INTERNAL_SERVER_ERROR",
			message: `Error fetching ordini by user ID: ${(e as Error).message}`,
		});
	}
};

export const createOrdine = async (data: NewOrdini) => {
	try {
		return await db.transaction().execute(async (tx) => {
			const prezzo = await tx
				.selectFrom("prezziario")
				.select(["prezzo_cent", "nome_it"])
				.where("prezziario.idprezziario", "=", data.packid)
				.executeTakeFirstOrThrow();

			const order = await tx
				.insertInto("ordini")
				.values(data)
				.returningAll()
				.executeTakeFirstOrThrow();
			await tx
				.insertInto("payments")
				.values({
					ordine_id: order.ordine_id,
					servizio_id: order.servizio_id,
					userid: order.userid,
					amount_cent: prezzo.prezzo_cent,
					paymentname: prezzo.nome_it,
					paymentmethod: "manual",
					paymentstatus: data.isActive
						? PaymentStatusEnum.success
						: PaymentStatusEnum.processing,
					paid_at: data.isActive ? new Date() : null,
				})
				.execute();

			return order;
		});
	} catch (e) {
		throw new TRPCError({
			code: "INTERNAL_SERVER_ERROR",
			message: `Error creating ordine: ${(e as Error).message}`,
		});
	}
};

export const removeOrder = async (ordineId: OrdiniOrdineId) => {
	try {
		await db
			.deleteFrom("ordini")
			.where("ordine_id", "=", ordineId)
			.executeTakeFirstOrThrow();
		return true;
	} catch (e) {
		throw new TRPCError({
			code: "INTERNAL_SERVER_ERROR",
			message: `Error removing order: ${(e as Error).message}`,
		});
	}
};

export const updateOrder = async ({
	ordineId,
	data,
}: {
	ordineId: OrdiniOrdineId;
	data: OrdiniUpdate;
}) => {
	try {
		const updated = await db
			.updateTable("ordini")
			.set(data)
			.where("ordine_id", "=", ordineId)
			.returningAll()
			.executeTakeFirstOrThrow();
		return updated;
	} catch (e) {
		throw new TRPCError({
			code: "INTERNAL_SERVER_ERROR",
			message: `Error updating order: ${(e as Error).message}`,
		});
	}
};

export const cleanupUnusedOrders = async ({ db }: { db: Querier }) => {
	try {
		const orders = await db
			.selectFrom("ordini")
			.select("ordini.ordine_id")
			.leftJoin("payments", "payments.ordine_id", "ordini.ordine_id")
			.where("payments.paymentstatus", "is", null)
			.where("ordini.isActive", "=", false)
			.distinct()
			.execute();

		if (orders.length === 0) {
			return "ok";
		}
		const ordineIds = orders.map((o) => o.ordine_id);
		await db.deleteFrom("ordini").where("ordine_id", "in", ordineIds).execute();

		return "ok";
	} catch (e) {
		throw new TRPCError({
			code: "INTERNAL_SERVER_ERROR",
			message: `Error cleaning up old orders: ${(e as Error).message}`,
		});
	}
};